Blinkers, brake light problem???

[CoreyP]

Don't know if this made a difference but the blinkers and brake light worked until I hit a heavy rain storm. Wasn't in the rain long but around 50 MPH for 5 minutes.

My running lights work and so does the back light. Problem is neither blinker works and the brake light won't work. The blinker indicator light lights up solid yellow.

I don't know why these two would be connected? If the blinkers fail the brake light should still work? Right?

Tested the brake light socket. I get 11 V over the one contact, zero on the other. When I hit the brake I get 11 V on one but still zero on the other. Bulb looks good, both filaments look unbroken.  

I'm going to check the fuses here in a minute but I doubt the blinkers and brake light are on fuse?

Anyone have an idea what is going on?

[gordonv]

I'm going to start with the main wire harness connector block. I forget exactly what happens, but water gets in, and corrodes the connections, water then causes different issues.

I remember my light coming on, but I forget which and what worked or didn't.

Give it a day riding in some dry heat or a week in the garage, and see if the issue goes away, and all is fine again.

If so, I have the how-to on fixing it. It's actually an easy job, but just something that will take hours to do, with the bike half apart.

[CoreyP]

That was simple two blown fuses.

Next question is why that happened? Fuses look like originals, they all had some corrosion on them. Water must have gotten somewhere it shouldn't have been.

[CoreyP]

I'm going to start with the main wire harness connector block. I forget exactly what happens, but water gets in, and corrodes the connections, water then causes different issues.

I remember my light coming on, but I forget which and what worked or didn't.

Give it a day riding in some dry heat or a week in the garage, and see if the issue goes away, and all is fine again.

If so, I have the how-to on fixing it. It's actually an easy job, but just something that will take hours to do, with the bike half apart.

Where is the "main wire harness connector block"?

I don't need this to be an on going thing.

[Madmike]

That was simple two blown fuses.

Next question is why that happened? Fuses look like originals, they all had some corrosion on them. Water must have gotten somewhere it shouldn't have been.

....or you have an intermittent short to ground... 

[The emperor has no clothes]

That was simple two blown fuses.

Next question is why that happened? Fuses look like originals, they all had some corrosion on them. Water must have gotten somewhere it shouldn't have been.

My suspect with those clues would be in the connector under the rear fender.

[CoreyP]

There's another connector under the fender? I see the one connector that feeds the wiring harness through the fender, I thought it was a straight shot to the tail lights? I checked the connector under the seat, it's tight and fine looking. I guess I'll have to go look under the fender. That's probably a good place to look because that area gets the most abuse and water.

[The emperor has no clothes]

There's another connector under the fender? I see the one connector that feeds the wiring harness through the fender the I thought it was a straight shot to the tail lights? I checked the connector under the seat, it's tight and fine looking. I guess I'll have to go look under the fender. That's problem a good place to look because that area gets the most abuse and water.

It’s held in place with a metal bracket. Some have messed them up bottoming out the tire on it. It’s hard to see with the tire on. Probably be easier to remove the back section of fender to check it.

[gordonv]

The rear half of your fender has the lights on it, so when you remove the rear from the front fender, there is a connector inside the wheel well. This connector could have given you the problem, or the wheel bottomed out and rubbed on the wires.


Glad to hear it's not the main. I didn't think of fuse first (should have) and the possible problem with shorting.

The main block is under the battery holder. It's a fixed connection, under the loom of the main wire harness, it's not two pieces. It's a connector block. Wires go in, and are bus bared to other wires, and come out again. Think of a splice block. Very uncommon problem, but usually shows up with water, and goes away when dry (usually).